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811-93-8

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811-93-8 Usage

Uses

1,2-Diamino-2-methyl Propane is a reactant used in the preparation of neocryptolepine analogs with antimalarial activity.

Purification Methods

Dry the diamine with sodium for 2 days, then distil it from sodium under reduced pressure. [Beilstein 4 IV 1306.]

Check Digit Verification of cas no

The CAS Registry Mumber 811-93-8 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,1 and 1 respectively; the second part has 2 digits, 9 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 811-93:
(5*8)+(4*1)+(3*1)+(2*9)+(1*3)=68
68 % 10 = 8
So 811-93-8 is a valid CAS Registry Number.
InChI:InChI=1/C4H12N2/c1-4(2,6)3-5/h3,5-6H2,1-2H3/p+2

811-93-8SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-Methyl-1,2-Propanediamine

1.2 Other means of identification

Product number -
Other names 1,2-Propanediamine, 2-methyl-

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:811-93-8 SDS

811-93-8Synthetic route

3-amino-3-methylbutanamide
173337-04-7

3-amino-3-methylbutanamide

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With water; sodium hydroxide In water at 0 - 72℃; for 5h; Concentration;89%
1,1-dimethyl-2-nitro-ethylamine

1,1-dimethyl-2-nitro-ethylamine

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With potassium hydroxide; hydrogen; nickel In methanol at 20℃; under 760.051 Torr; for 16h;52%
2,2-dimethylaziridine
2658-24-4

2,2-dimethylaziridine

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With ammonia; ammonium chloride at 100℃; under 41188.4 Torr;
α-amino-isobutyraldehyde-oxime
70183-48-1

α-amino-isobutyraldehyde-oxime

A

2,2,5,5-tetramethyl-piperazine
5434-90-2

2,2,5,5-tetramethyl-piperazine

B

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With sodium amalgam; acetic acid
With sodium amalgam; ethanol; acetic acid
2-nitro-2-methylpropanol
76-39-1

2-nitro-2-methylpropanol

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With ammonia; nickel at 40℃; under 55163.1 Torr; Hydrogenation;
N,N'-(1,1-dimethyl-ethanediyl)-bis-acetamide
113185-80-1

N,N'-(1,1-dimethyl-ethanediyl)-bis-acetamide

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With hydrogenchloride; water
1,2-dinitro-2-methylpropane
24884-68-2

1,2-dinitro-2-methylpropane

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With acetic acid; platinum under 58840.6 Torr; Hydrogenation;
N-nitro-tert-butylamine
3335-66-8

N-nitro-tert-butylamine

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With methanol; nickel Hydrogenation;
2-amino-2-cyanopropane
19355-69-2

2-amino-2-cyanopropane

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With lithium aluminium tetrahydride; diethyl ether
With hydrogenchloride; methanol; palladium Hydrogenation;
With hydrogenchloride; ethanol; palladium Hydrogenation;
isobutene
115-11-7

isobutene

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With diethyl ether; mixture of gaseous nitrogen oxides bei der Reduktion des entstehenden Isobutylennitrosits mit Zinn und Salzsaeure;
N-(1-cyano-1-methyl-ethyl)acetamide
40652-06-0

N-(1-cyano-1-methyl-ethyl)acetamide

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
(i) H2, Raney-Ni, (ii) aq. KOH; Multistep reaction;
N1-benzyl-2-methylpropane-1,2-diamine
80704-02-5

N1-benzyl-2-methylpropane-1,2-diamine

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With hydrogen; palladium on activated charcoal In hydrogenchloride
2-Acetamido-isobutylamin

2-Acetamido-isobutylamin

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With potassium hydroxide Heating;
5,5-Dimethyl-4,5-dihydro-1H-imidazole
2305-59-1

5,5-Dimethyl-4,5-dihydro-1H-imidazole

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With sodium hydroxide In methanol; water for 4h; Heating; Yield given;
α-amino-isobutyraldehyde-oxime-hydrochloride

α-amino-isobutyraldehyde-oxime-hydrochloride

A

2,2,5,5-tetramethyl-piperazine
5434-90-2

2,2,5,5-tetramethyl-piperazine

B

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With sodium amalgam; acetic acid
hydrogenchloride
7647-01-0

hydrogenchloride

2-amino-2-cyanopropane
19355-69-2

2-amino-2-cyanopropane

palladium

palladium

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
Hydrogenation;
ethanol
64-17-5

ethanol

2-amino-2-cyanopropane
19355-69-2

2-amino-2-cyanopropane

sodium

sodium

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

α-amino-isobutyraldoxime hydrochloride

α-amino-isobutyraldoxime hydrochloride

A

2,2,5,5-tetramethyl-piperazine
5434-90-2

2,2,5,5-tetramethyl-piperazine

B

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With sodium amalgam; ethanol; acetic acid
2-nitro-2-methylpropanol
76-39-1

2-nitro-2-methylpropanol

ammonia
7664-41-7

ammonia

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
bei Einw. erst bei -35grad, dann bei +40grad, und folgender Druckhydrierung in Gegenwart von Raney-Nickel bei ca. 40grad;
ethanol
64-17-5

ethanol

α-amino-isobutyraldehyde-oxime
70183-48-1

α-amino-isobutyraldehyde-oxime

acetic acid
64-19-7

acetic acid

sodium amalgam

sodium amalgam

A

2,2,5,5-tetramethyl-piperazine
5434-90-2

2,2,5,5-tetramethyl-piperazine

B

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2,4,4-trimethyl-2,3-dihydroimidazole
1314968-50-7

2,4,4-trimethyl-2,3-dihydroimidazole

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With potassium hydroxide; water at 25 - 40℃; for 16.5 - 19.5h; Heating / reflux;
2-methyl-2-nitropropanamine
549505-81-9

2-methyl-2-nitropropanamine

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With propylamine; hydrogen; Grace Raney Nickel In methanol; water at 49 - 52℃; under 29583 - 31390.6 Torr; Product distribution / selectivity; autoclave;
2-Amino-2-methyl-1-propanol
124-68-5

2-Amino-2-methyl-1-propanol

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

Conditions
ConditionsYield
With ammonia; hydrogen; magnesium chloride at 190℃; under 7500.75 Torr; for 8h; Reagent/catalyst; Pressure; Autoclave;
4-Fluoronitrobenzene
350-46-9

4-Fluoronitrobenzene

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-methyl-N1-(4-nitrophenyl)propane-1,2-diamine
440102-93-2

2-methyl-N1-(4-nitrophenyl)propane-1,2-diamine

Conditions
ConditionsYield
With potassium carbonate In 1,4-dioxane for 3h; Heating / reflux;100%
With potassium carbonate In N,N-dimethyl-formamide for 16h; Reflux;100%
With potassium carbonate In 1,4-dioxane at 100℃; for 3h; Sealed tube;65%
With potassium carbonate In 1,4-dioxane at 100℃; for 3h; Sealed tube;65%
urea
57-13-6

urea

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

4,4-dimethyltetrahydro-2H-imidazol-2-one
24572-33-6

4,4-dimethyltetrahydro-2H-imidazol-2-one

Conditions
ConditionsYield
In ethylene glycol at 130 - 180℃; for 4h;99.4%
at 130 - 180℃; for 5h; Inert atmosphere;83.4%
5-methyl-2-hydroxyacetophenone
1450-72-2

5-methyl-2-hydroxyacetophenone

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-(1-(2-amino-2-methylpropylimino)ethyl)-4-methylphenol
1400693-08-4

2-(1-(2-amino-2-methylpropylimino)ethyl)-4-methylphenol

Conditions
ConditionsYield
In methanol at 20℃; for 24h;99%
bromocyane
506-68-3

bromocyane

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

5,5-dimethyl-4,5-dihydro-imidazol-2-amine

5,5-dimethyl-4,5-dihydro-imidazol-2-amine

Conditions
ConditionsYield
In water at 0 - 20℃; for 3h;99%
2-{[(3E)-4-(4-{[4-methoxy-2-(propan-2-yl)-5-{(2S,3S,4R,5R,6R)-3,4,5-tris(acetyloxy)-6-[(acetyloxy)methyl]oxan-2-yl}phenyl]methyl}-3-methylphenyl)-2,2-dimethylbut-3-enoyl]amino}-2-methylpropanoic acid

2-{[(3E)-4-(4-{[4-methoxy-2-(propan-2-yl)-5-{(2S,3S,4R,5R,6R)-3,4,5-tris(acetyloxy)-6-[(acetyloxy)methyl]oxan-2-yl}phenyl]methyl}-3-methylphenyl)-2,2-dimethylbut-3-enoyl]amino}-2-methylpropanoic acid

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

(1S)-2,4,6-tri-O-acetyl-1-[5-({4-[(1E)-4-({1-[(2-amino-2-methylpropyl)amino]-2-methyl-1-oxopropan-2-yl}amino)-3,3-dimethyl-4-oxobut-1-en-1-yl]-2-methylphenyl}methyl)-2-methoxy-4-(propan-2-yl)phenyl]-1,5-anhydro-3-O-formyl-D-glucitol
1240305-12-7

(1S)-2,4,6-tri-O-acetyl-1-[5-({4-[(1E)-4-({1-[(2-amino-2-methylpropyl)amino]-2-methyl-1-oxopropan-2-yl}amino)-3,3-dimethyl-4-oxobut-1-en-1-yl]-2-methylphenyl}methyl)-2-methoxy-4-(propan-2-yl)phenyl]-1,5-anhydro-3-O-formyl-D-glucitol

Conditions
ConditionsYield
With benzotriazol-1-ol; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride In chloroform; N,N-dimethyl-formamide at 20℃;99%
3-tert-butyl-2-hydroxy-5-methoxybenzaldehyde
123013-13-8

3-tert-butyl-2-hydroxy-5-methoxybenzaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

C28H40N2O4
1482507-91-4

C28H40N2O4

Conditions
ConditionsYield
In ethanol at 100℃; for 2h; Inert atmosphere; Schlenk technique; Reflux; Glovebox;98%
N-(Benzyloxycarbonyloxy)succinimide
13139-17-8

N-(Benzyloxycarbonyloxy)succinimide

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

(2-amino-2-methylpropyl)carbamic acid benzyl ester
156892-82-9

(2-amino-2-methylpropyl)carbamic acid benzyl ester

Conditions
ConditionsYield
In dichloromethane 1.) -40 deg C, 3 h, 2.) -40 deg C to r.t., overnight;97%
benzyl phenyl carbonate
28170-07-2

benzyl phenyl carbonate

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

(2-amino-2-methylpropyl)carbamic acid benzyl ester
156892-82-9

(2-amino-2-methylpropyl)carbamic acid benzyl ester

Conditions
ConditionsYield
In ethanol at 20℃;97%
In ethanol at 80℃; for 18h;97%
Stage #1: benzyl phenyl carbonate; 1,1-dimethylethylenediamine In ethanol at 20℃;
Stage #2: With hydrogenchloride; water In ethanol pH=< 3;
Stage #3: With sodium hydroxide In dichloromethane; water
87%
formaldehyd
50-00-0

formaldehyd

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

4-Aminobenzonitrile
873-74-5

4-Aminobenzonitrile

3-({5,5-dimethyl-3-[2-(p-cyanophenyl)-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-(p-cyanophenyl)-1-diazenyl]imidazolidine

3-({5,5-dimethyl-3-[2-(p-cyanophenyl)-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-(p-cyanophenyl)-1-diazenyl]imidazolidine

Conditions
ConditionsYield
Stage #1: 4-Aminobenzonitrile With hydrogenchloride; sodium nitrite In water at 0℃; for 0.5h;
Stage #2: formaldehyd; 1,1-dimethylethylenediamine With sodium hydrogencarbonate In water for 0.5h; cooling;
97%
SULFAMIDE
7803-58-9

SULFAMIDE

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

3,3-dimethyl-1,2,5-thiadiazolidine-1,1-dioxide
144432-67-7

3,3-dimethyl-1,2,5-thiadiazolidine-1,1-dioxide

Conditions
ConditionsYield
With pyridine for 16.5h; Heating / reflux;97%
With pyridine for 16h; Reflux;
With pyridine Reflux;
2-amino-5-nitropyrimidine-4,6-diol
80466-56-4

2-amino-5-nitropyrimidine-4,6-diol

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-Amino-6-(2-amino-2-methylpropylamino)-4-hydroxy-5-nitropyrimidine monohydrochloride
84812-27-1

2-Amino-6-(2-amino-2-methylpropylamino)-4-hydroxy-5-nitropyrimidine monohydrochloride

Conditions
ConditionsYield
In ethanol97%
maleiimide
541-59-3

maleiimide

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-(5,5-dimethyl-3-oxo-piperazin-2-yl)acetamide

2-(5,5-dimethyl-3-oxo-piperazin-2-yl)acetamide

Conditions
ConditionsYield
In ethanol at 20℃; for 1h;97%
In ethanol at 20℃; for 1h;12.3g
2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde

2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-(2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4,4-dimethylimidazolidine

2-(2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-4,4-dimethylimidazolidine

Conditions
ConditionsYield
In diethyl ether for 24h;97%
allyl phenyl carbonate
16308-68-2

allyl phenyl carbonate

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

(2-amino-2-methylpropyl)carbamic acid allyl ester

(2-amino-2-methylpropyl)carbamic acid allyl ester

Conditions
ConditionsYield
In ethanol at 20℃;96%
In ethanol at 80℃; for 18h;96%
3-methyl-5-[{BF4-Bu3N+(CH2)3}2CH3C]-salicylaldehyde

3-methyl-5-[{BF4-Bu3N+(CH2)3}2CH3C]-salicylaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

4BF4(1-)*C84H160N6O2(4+)

4BF4(1-)*C84H160N6O2(4+)

Conditions
ConditionsYield
In dichloromethane Molecular sieve; Inert atmosphere;96%
1,3-diacetyl-1,3-dihydro-benzoimidazol-2-one
2735-73-1

1,3-diacetyl-1,3-dihydro-benzoimidazol-2-one

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

1,1-dimethyl-2-(methylcarbonylamino)ethylamine
87484-88-6

1,1-dimethyl-2-(methylcarbonylamino)ethylamine

Conditions
ConditionsYield
In tetrahydrofuran at 20℃; for 0.3h;95%
isatoic anhydride
118-48-9

isatoic anhydride

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-methyl-1,2-bis{(2-aminobenzoyl)amino}propane

2-methyl-1,2-bis{(2-aminobenzoyl)amino}propane

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 50℃; for 3.5h;95%
4-fluorobenzonitrile
1194-02-1

4-fluorobenzonitrile

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

4-((2-amino-2-methylpropyl)amino)benzonitrile
440102-94-3

4-((2-amino-2-methylpropyl)amino)benzonitrile

Conditions
ConditionsYield
In dimethyl sulfoxide at 120℃; for 24h;95%
at 180℃; for 0.416667h; Microwave irradiation;88%
C25H23NO5
373638-28-9

C25H23NO5

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

C29H33N3O4
373634-03-8

C29H33N3O4

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; diisopropyl-carbodiimide In DMF (N,N-dimethyl-formamide) at 20℃;94%
3-methoxy-2-hydroxybenzaldehyde
148-53-8

3-methoxy-2-hydroxybenzaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

N,N′-bis(2-hydroxy-3-methoxybenzylidene)-1,2-diamino-2-methylpropane
263570-01-0

N,N′-bis(2-hydroxy-3-methoxybenzylidene)-1,2-diamino-2-methylpropane

Conditions
ConditionsYield
With salicylaldehyde In methanol for 3h; Reflux; Dean-Stark;94%
In methanol
In methanol
3,5-di-tert-butyl-2-hydroxybenzaldehyde
37942-07-7

3,5-di-tert-butyl-2-hydroxybenzaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

N,N'-bis(3,5-di-t-butylsalicylidene)-1,2-diamino-2-methylpropane

N,N'-bis(3,5-di-t-butylsalicylidene)-1,2-diamino-2-methylpropane

Conditions
ConditionsYield
In ethanol for 3h; Heating;93%
In dichloromethane for 3h; Solvent; Reflux;91%
3,5-di-tert-butyl-2-hydroxybenzaldehyde
37942-07-7

3,5-di-tert-butyl-2-hydroxybenzaldehyde

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

N,N'-bis(3,5-di-tert-butylsalicylidene)-2-methyl-1,2-diaminopropane
875710-46-6

N,N'-bis(3,5-di-tert-butylsalicylidene)-2-methyl-1,2-diaminopropane

Conditions
ConditionsYield
In ethanol for 3h; Heating / reflux;93%
In methanol; chloroform
(η5-Cp)Fe(CO)3PF6
38834-26-3

(η5-Cp)Fe(CO)3PF6

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

C5H5Fe(CO)2CONHCH2C(CH3)2NH3(1+)*PF6(1-)
91178-28-8

C5H5Fe(CO)2CONHCH2C(CH3)2NH3(1+)*PF6(1-)

Conditions
ConditionsYield
In diethyl ether A suspn. of complex in N2-satd. Et2O was stirred for 1 h with excess of diamine under N2 atm. at room temp.;; ppt. was filtered, washed with Et2O, recrystd. from CH3CN-Et2O at 0°C; elem. anal.;;93%
C20H29NO6

C20H29NO6

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

C23H37N3O5

C23H37N3O5

Conditions
ConditionsYield
at 25℃;93%
dispiro[adamantane-2,2'-[1,3,5]trioxolane-4',1

dispiro[adamantane-2,2'-[1,3,5]trioxolane-4',1"-cyclohexane]-3"-yl 4-nitrophenylcarbonate

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

dispiro[adamantane-2,2'-[1,3,5]trioxolane-4',1

dispiro[adamantane-2,2'-[1,3,5]trioxolane-4',1"-cyclohexane]-3"-yl N-(2-amino-2-methylpropyl)carbamate

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 1h;93%
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide at 20℃; for 1h;93%
(1s,4s)-dispiro[cyclohexane-1,3'-[1,2,4]trioxolane-5',2

(1s,4s)-dispiro[cyclohexane-1,3'-[1,2,4]trioxolane-5',2"-tricyclo[3.3.1.1(3,7)]decan]-4-ylacetic acid

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

cis-adamantane-2-spiro-3'-8'-[[[(2'-amino-2'-methylpropyl)amino]carbonyl]methyl]-1',2',4'-trioxaspiro[4.5]decane

cis-adamantane-2-spiro-3'-8'-[[[(2'-amino-2'-methylpropyl)amino]carbonyl]methyl]-1',2',4'-trioxaspiro[4.5]decane

Conditions
ConditionsYield
Stage #1: (1s,4s)-dispiro[cyclohexane-1,3'-[1,2,4]trioxolane-5',2"-tricyclo[3.3.1.1(3,7)]decan]-4-ylacetic acid With chloroformic acid ethyl ester; triethylamine In dichloromethane at -10 - -5℃; Inert atmosphere;
Stage #2: 1,1-dimethylethylenediamine In ethanol; dichloromethane at 20℃; Product distribution / selectivity;
92.81%
2-methyl-benzyl alcohol
89-95-2

2-methyl-benzyl alcohol

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

α,α-[(1,1-dimethylethylene)dinitrilo]di-o-cresol
30180-37-1

α,α-[(1,1-dimethylethylene)dinitrilo]di-o-cresol

Conditions
ConditionsYield
In ethanol at 20℃; for 2h; Condensation;92%
1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

6-benzyloxy-3,4-dihydro-1H-isoquinoline-1,2-dicarboxylic acid 2-tert-butyl ester
373638-25-6

6-benzyloxy-3,4-dihydro-1H-isoquinoline-1,2-dicarboxylic acid 2-tert-butyl ester

1-(2-amino-2-methyl-propylcarbamoyl)-6-benzyloxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

1-(2-amino-2-methyl-propylcarbamoyl)-6-benzyloxy-3,4-dihydro-1H-isoquinoline-2-carboxylic acid tert-butyl ester

Conditions
ConditionsYield
With 1-hydroxy-7-aza-benzotriazole; diisopropyl-carbodiimide In DMF (N,N-dimethyl-formamide) at 20℃;92%
With 1-hydroxy-7-aza-benzotriazole; 1-ethyl-(3-(3-dimethylamino)propyl)-carbodiimide hydrochloride
1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

2-(2'-formylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane
380151-85-9

2-(2'-formylphenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane

4,4-dimethyl-2-[2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]imidazolidine

4,4-dimethyl-2-[2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]imidazolidine

Conditions
ConditionsYield
In dichloromethane for 24h;92%
formaldehyd
50-00-0

formaldehyd

p-aminoethylbenzoate
94-09-7

p-aminoethylbenzoate

1,1-dimethylethylenediamine
811-93-8

1,1-dimethylethylenediamine

3-({5,5-dimethyl-3-[2-(p-ethoxycarbonylphenyl)-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-(p-ethoxycarbonylphenyl)-1-diazenyl]imidazolidine

3-({5,5-dimethyl-3-[2-(p-ethoxycarbonylphenyl)-1-diazenyl]-1-imidazolidinyl}methyl)-4,4-dimethyl-1-[2-(p-ethoxycarbonylphenyl)-1-diazenyl]imidazolidine

Conditions
ConditionsYield
Stage #1: p-aminoethylbenzoate With hydrogenchloride; sodium nitrite In water at 0℃; for 0.5h;
Stage #2: formaldehyd; 1,1-dimethylethylenediamine With sodium hydrogencarbonate In water for 0.5h; cooling;
92%

811-93-8Relevant articles and documents

Method for synthesizing 2-methyl-1,2-propylene diamine

-

Paragraph 0011; 0012; 0014; 0016; 0018; 0020, (2018/06/04)

The invention relates to a method for synthesizing 2-methyl-1,2-propylene diamine. According to the method, 2-amino-2-methyl-1-propyl alcohol is adopted as a raw material, and a cobalt catalyst and aids are combined to form a catalyst. The method has the advantages that the reaction pressure is low, the target product, namely the 2-methyl-1,2-propylene diamine, is high in selectivity, and the like, and relatively high industrial production values can be made.

PROCESS FOR THE PREPARATION OF ALKYLDIAMINES

-

Page/Page column 7, (2013/02/28)

Provided is a process for preparing alkyl diamine compounds in high purity. The process utilizes an alkyl amine compound during the reduction of a nitroamine, resulting in reduction of the concentration of undesired byproducts.

Method for producing 1,1-disubstituted ethylenediamine

-

Page/Page column 6, (2008/06/13)

[PROBLEM TO BE SOLVED]: To provide a method for synthesizing 1,1-disubstituted ethylenediamine (III) safely and economically, and therefore making possible a industrial production. [SOLUTION]: The method for producing the intermediate shown by the general formula (II) characterized by reacting ketones shown by the general formula (I) , nitromethane and ammonia, next producing 1,1-disubstituted ethylenediamine shown by the general formula (III) by catalytic hydrogenation's reaction.(Wherein R1, R2 are at the same time or independently alkyl of C1-6, trifluoromethyl, or cycloalkyl of 3-10 formed by R1 and R2 and the carbon of the root.)

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